You now own the full toolkit: pegs (shape, body, alphabet), palaces, the phonetic number system, the Story Chain, and the specialty applications built on top of them, names and faces, cards, speeches, exams, foreign vocabulary. None of it was ever about talent, it was Focus, Location, Code, Action, Review, applied over and over until it became automatic.
The habit that keeps all of it sharp going forward is simple: keep using it. Reach for a peg set on your next errand run instead of your phone. Build a palace for your next real study topic. Review on the schedule from Day 23 instead of cramming.
To close the course, here’s a genuine Grandmaster-level challenge, a mixed list that pulls together everything you’ve built. Give it a real attempt on Grandmaster difficulty before you consider yourself done.